\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Bunching upper table\label{bunch1\_cube}}
\begin{tabular}{l*{8}{c}}
\hline\hline
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}&\multicolumn{1}{c}{(7)}&\multicolumn{1}{c}{(8)}\\
            &\multicolumn{1}{c}{B05cube\_log\_csd}&\multicolumn{1}{c}{B05cube\_ihs\_csd}&\multicolumn{1}{c}{B1cube\_log\_csd}&\multicolumn{1}{c}{B1cube\_ihs\_csd}&\multicolumn{1}{c}{B15cube\_log\_csd}&\multicolumn{1}{c}{B15cube\_ihs\_csd}&\multicolumn{1}{c}{B2cube\_log\_csd}&\multicolumn{1}{c}{B2cube\_ihs\_csd}\\
\hline
1.bunch\_W05 &       2.443***&       2.599***&               &               &               &               &               &               \\
            &     (0.700)   &     (0.740)   &               &               &               &               &               &               \\
1.bunch\_W1  &               &               &       3.246***&       3.423***&               &               &               &               \\
            &               &               &     (0.595)   &     (0.631)   &               &               &               &               \\
1.bunch\_W15 &               &               &               &               &       2.786***&       2.931***&               &               \\
            &               &               &               &               &     (0.861)   &     (0.916)   &               &               \\
1.bunch\_W2  &               &               &               &               &               &               &       2.220** &       2.362** \\
            &               &               &               &               &               &               &     (0.991)   &     (1.046)   \\
eei\_bin     &      -0.646   &      -0.649   &      -0.808*  &      -0.818*  &      -0.859** &      -0.872*  &      -0.852*  &      -0.868*  \\
            &     (0.445)   &     (0.478)   &     (0.430)   &     (0.464)   &     (0.432)   &     (0.466)   &     (0.441)   &     (0.475)   \\
eei\_2       &       0.030** &       0.031** &       0.035***&       0.036** &       0.037***&       0.038***&       0.037***&       0.038** \\
            &     (0.014)   &     (0.015)   &     (0.013)   &     (0.014)   &     (0.013)   &     (0.014)   &     (0.014)   &     (0.015)   \\
eei\_3       &      -0.000** &      -0.000** &      -0.000***&      -0.000***&      -0.000***&      -0.000***&      -0.000***&      -0.000***\\
            &     (0.000)   &     (0.000)   &     (0.000)   &     (0.000)   &     (0.000)   &     (0.000)   &     (0.000)   &     (0.000)   \\
1bn.ccode   &       0.757   &       1.226   &       0.757   &       1.226   &       0.757   &       1.226   &       0.757   &       1.226   \\
            &     (2.241)   &     (2.484)   &     (2.241)   &     (2.484)   &     (2.241)   &     (2.484)   &     (2.241)   &     (2.484)   \\
2.ccode     &       4.886   &       6.153*  &       4.886   &       6.153*  &       4.886   &       6.153*  &       4.886   &       6.153*  \\
            &     (3.151)   &     (3.426)   &     (3.151)   &     (3.426)   &     (3.151)   &     (3.426)   &     (3.151)   &     (3.426)   \\
3.ccode     &           .   &           .   &           .   &           .   &           .   &           .   &           .   &           .   \\
            &           .   &           .   &           .   &           .   &           .   &           .   &           .   &           .   \\
4.ccode     &       1.971   &       2.961   &       1.971   &       2.961   &       1.971   &       2.961   &       1.971   &       2.961   \\
            &     (3.579)   &     (3.919)   &     (3.579)   &     (3.919)   &     (3.579)   &     (3.919)   &     (3.579)   &     (3.919)   \\
5.ccode     &       2.596   &       3.863   &       2.596   &       3.863   &       2.596   &       3.863   &       2.596   &       3.863   \\
            &     (3.066)   &     (3.331)   &     (3.066)   &     (3.331)   &     (3.066)   &     (3.331)   &     (3.066)   &     (3.331)   \\
6.ccode     &       6.129*  &       7.331** &       6.129*  &       7.331** &       6.129*  &       7.331** &       6.129*  &       7.331** \\
            &     (3.131)   &     (3.390)   &     (3.131)   &     (3.390)   &     (3.131)   &     (3.390)   &     (3.131)   &     (3.390)   \\
8.ccode     &       2.357   &       3.209   &       2.357   &       3.209   &       2.357   &       3.209   &       2.357   &       3.209   \\
            &     (3.478)   &     (3.833)   &     (3.478)   &     (3.833)   &     (3.478)   &     (3.833)   &     (3.478)   &     (3.833)   \\
\hline
r2          &       0.615   &       0.620   &       0.627   &       0.631   &       0.626   &       0.630   &       0.621   &       0.626   \\
N           &    7644.000   &    7644.000   &    7644.000   &    7644.000   &    7644.000   &    7644.000   &    7644.000   &    7644.000   \\
\hline\hline
\multicolumn{9}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{9}{l}{\footnotesize * \(p<0.10\), ** \(p<.05\), *** \(p<.01\)}\\
\end{tabular}
\end{table}
